Extend your WRX/ STi engine life and keep oil temps down with the Perrin Oil Cooler Kit. This kit will keep temperatures at 85-90C or 185-194F for maximum engine performance. Unlike other kits, the Perrin kit comes with preassembled hoses for easier installation which are rated up to 250psi and 215F. A must have for any track guy or stage 2+ Subaru STis.